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Expired Canadian patentCanada

Aminoluciferin derivatives, processes for the production thereof and their application in the determination of enzyme activities

CA 1311333 C · Owner: Geiger, Reinhard · Inventors: Geiger, Reinhard; Miska, Werner

CIPO record

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Abstract From the Canadian patent

The invention relates to D-aminoluciferin derivatives of the general formula I, (I), wherein, R1 represents a L-amino acid or peptide radical having up to 10 L-amino acid moieties said radical being bound via the (terminal) carboxyl group in the form of an amide and the free amino group thereof is optionally be protected by a common protecting group, or wherein R1 represents a monosaccharide or disaccharide radical. Said aminoluciferin derivatives can be cleaved by enzymes giving free aminoluciferin which can be determined luminometrically. The invention relates also to the use of said aminoluciferin derivatives for determining enzyme activities as well to a process for producing said …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted December 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 5, 1988
GrantedDecember 8, 1992
Term endedDecember 8, 2009
Patent numberCA 1311333 C
Classification (IPC)C07D277/68 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedJan 5, 1988Patent grantedDec 8, 1992Term endedDec 8, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.